Math practice for 13 year olds - page 97 of 414
Number of problems found: 8262
- Kinetic energy
A 100 kg car has a velocity of 15 m/s. What is the car's kinetic energy? - Chocolate gingerbread price
One package of chocolate costs 9 CZK more than one package of gingerbread. Five packages of chocolate were CZK 15 more expensive than 10 packages of gingerbread. How much was a package of chocolates, and how much was a package of gingerbread? - Triangle construction
Construct triangle KLM if side m=6.5 cm, median to the side m tm=4 cm, height to side m: vm=3.2 cm - Sum of absolute values
Is it possible for |r| + |s| = |r+s|? If so, when? - Baking 5
Baking 120 kg of bread requires 87 kg of flour. How many kilograms of flour will be needed to bake 400 kg of bread? - The temperature 36
The temperature over the course of a day was being monitored. In the morning, the temperature was −3 °F. In the middle of the day, the temperature rose to 12 °F. After dark, the temperature dropped again to −6 °F. What was the average temperature for the - Daily balance
For the month of April, each checking account has a balance of $555 for 24 days, $2436 for one day, and $243 for five days. What is the daily balance of the account for April? - Pool water hectoliters
How many hectoliters of water are in a rectangular prism-shaped pool if the top is 6 m wide, the bottom is 4 m wide, the pool is 2 m deep, and the pool is 12 m long? - Number line middle
Which number lies exactly in the middle between the numbers 258 and 326 on the number line? - Three 205
Three metallic bars of lengths 400 cm, 600 cm, and 720 cm are cut into equal pieces. Find the largest possible area of a square that can be made from any of the three bars. - Two painters
Two painters are assigned to finish painting the houses in a housing project. John can finish a house in 4 days, and Kurt painted it in 3 days. How long would it have taken if John and Kurt had worked painting the house together? - The perimeter
The perimeter of a rhombus whose diagonal lengths are in the ratio 3:4 is 40 cm. What is its area in cm²? - Ulysses
Ulysses bought 6 1/2 kg of beef, 3 3/4 kg of pork, and 5 1/2 kg of chicken. If 1 kg of beef costs 400 pesos, 1 kg of pork costs 300 pesos, and 1 kg of chicken costs 170 pesos. How much change is left if he gives 5,000 pesos for his purchase? - Block volume height
The block has a length of 12 cm and a width of 0.6 dm. The height is the same size as the edge of a cube whose volume is 64 cm³. Calculate the volume of the cuboid in cm³. - Hiker average speed
The hiker walked for 3 hours at a 4 km/h speed. Due to the deteriorating weather, he increased his pace and walked at 7 km/h for the next hour and a half. At the end of his trip, it started to rain, so he started running at a speed of 20 km/h for 30 minut - Unknown number quarter
A quarter of an unknown number multiplied by 4 equals 30% of that unknown number. Determine the unknown number. - Soccer season
Joel is training for soccer season. On Monday, Joel exercises for 20 minutes before school, and 25% of that time is spent playing soccer. On Mondays, he exercises for 60 minutes after school, and 40% of that time is spent playing soccer. What is the total - A truck 4
A truck covers a particular distance in 3 hours with a speed of 60 miles per hour. If the speed is increased by 30 miles per hour, find the time the truck takes to cover the same distance in hours. - Six pipes
6 Pipes are required to fill a tank in 1 hour 20 minutes. How long will it take to use only five pipes of the same type? Give your answer in hours and minutes. - Thabo
Thabo uses 3 ½ liters of petrol per week for his motorcycle. How long will he be driving with 49 liters?
Do you have unsolved math question and you need help? Ask a question, and we will try to solve it. We solve math question.
